2/5 PLO
CO ($860) opens (25% RFI CO; Tight preflop, but capable of making moves postflop)
BU ($2700) 3B from BU (3b BUvCO about 15%; Aggressive good player)
Hero SB ($1000) with AcKhTc7h calls
BB folds
CO calls

(pot $163) Flop QsJd4c

1. I'm curious for your thoughts on playing the flop (leading vs. ck/c vs. ck/r).
2. What hands would you cold 4B here